Rock-crusher



UNITE r EDWARD HENRY MOYLE, OF LOS ANGELES, CALIFORNIA.

ROCK-CRUSHER.

To all 'whom it may concern:

Be it known that I, EDWARD HENRY Mom, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a certain new and useful Improvement 1n Rock-Crushers, of which the following is a specification.

This invention relates to a rock crusher and pulverizer for rocks and ores, it has particular reference to that class and type 'of crusher more specifically described and claimed in my co-pending application for patent, patented June 8th, 1915, No. 1,142,116 wherein I have described and illustrated a crusher involving the employ ment of two curved plates, a portion of the curve being eccentric with the fulcrum and an adjustable thrust bar bearing against the jaw and breakable under a strain inexcess of a predetermined one.

The present invention relates to a crusher constructed according to the same general principle, but embodying crushing plates that are eccentric throughout, Without any concentric portion or portions, and in which the thrust bar of a breakable strength is disposed in the lever instead of in the jaw, in order to reduce the cost and particularly to effect a very delicate adjustment. 7

Objects of this invention are to provide a device for eflectively reducing the rock or ore to a condition desired by successive stages, consisting in first breaking the rock or ore along the lines of least cleavage, then crushing the same and finally transforming the same into a pulverulent mass of a desired size; to provide a simple device made of the fewest parts, readily dissociable; having a minimum of bearings, convenient for transportation into difficultly accessible places,- and quickly assembled to provide a crusher in whichthe degree of fineness of the ore or rock may be regulated during the operation of the same, and finally to provide a device in which no material damage will be occasioned by the entry of any substance harder than that calculated for the crushing power of the jaws.

With these and other objects in view, this invention consists of the features, and ar- Specification of Letters Patent.

Patented May 20, 1919.

Application filed April 19, 1915. Serial No 22AM.

-and,

Fig. 3, is a sectional detail on lines A-A Fig. 2.

In a great many types of rock crushers the base is made solid and therefore veryheavy and cumbersome when it is desired to transport same into difiicultly accessibleplaces, such crushers also having a multiplicity of bearings, with a various number of connecting parts, requiring careful machining and a considerable expense in up-keep or repairs.

WVith a multiplicity of bearings, and a corresponding number of connecting parts, a series of unequal strains occur, and without due protection, when the parts become broken it is not only expensive to replace, but time is'also wasted in the receiving and replacement or renewals of parts.

The present invention consists of two side plates 1 and 2 having suitable flanges 3 on the'bottom, provided with bolt holes 5 for fastening to a suitable support or structure. These plates 1 and 2 are fastened to a die plate 6 by bolts 7, also by a rod 8 carrying a spacer tube or pipe 9. On the face 10 of the die plate 6 is fastened by bolts 11, an ogee curved crushing die 12, having its crushing face made suitable and to correspond with the crushing shoe hereinafter explained.

In operation I have found that the ogee curved crushing face of die 12-to be of great advantage inholding the ore from vertical or upward movement when crushing said ore, and, at the same time increasing the capacity by forcing the feed of the ore. It will be seen also, that while the ore can be crushed byeasy stages it is permissible of a large opening for feeding the ore.

Between and fulcrumed in said plates 1 and 2, by fulcrum pin or shaft 13, is-a lever 14, this shaft 13 being fitted with bearing blocks 15 and 16, made and arranged to slide or move in a rectangular fulcrum way 17 on each plate. A block of rubber 18 is preferably placed at the back of the bearing block 16, and between take-up plates 19. These take-up plates 19, are of any desired thickness for future adjustment of the wearing faces of the crushing die 12, and the crushing shoe 28, cooperating therewith.

In contact with the bearing block 15 is an adjustable and breakable thrust bar 20, arranged in a=slotted way 21, for adjustment by set screws 22 and 23'. These set screws 22 and 23 bear on the ends of said adjustable and breakable thrust bar- 20, in order that the bearing blocks 15 and 16 which carry the fulcrum pin or shaft 13, may have free transverse stress on said thrust bar 20, so that should any foreignv substance, such as the end of a drill, pick-point, or the like, be accidentally fed to the machine, said adjustable and breakable thrust bar 20, would then shear or break on either side plate 1 or side plate 2 or on both plates, thereby protecting all other parts of the machine from damage. The said adjustable and breakable thrust bar 20 may be made of cast-iron or any other material calculated to resist the strain upon the crushing of rocks or ores, but incapable of withstanding any excessive pressure, such as would result from the operationof the lever 14: on metal substances or objects, such as steel, iron, and the like, or in fact any, not intended for treatment by this machine.

On theleverl, is removably fastened by plates 24 and-25 and'cap screws 26 and 27, a crushing shoe 28. The face 29 of said shoe 28, may be made straight for a certain portion of. its length, where the primary crushing takes place, and where the final trituration or pulverization is accomplished, the face of the shoe 28 is formed eccentric or irregular as at 30, this eccentric 0r irregular face being very ess'ntial in order that the .ore may be finely pulverized. Said face also fulfils the very important function of forcing the feed of the machine, or in other words, mechanically compelling the ore to pass during the process of pulverization, through two fixed points, the plates remaining in their fixed relation without recession, as is common in ordinary crushers.

The fulcrum shaft 13 is preferably fastened to the lever 1 1, by set screw 31, while a set collar 32 may be used as shown on each end'of shaft 13, to keep the take-up plates and bearing blocks in position.

The driving or motion end of lever 1 1, is cross-sectionally a U shaped structure for embracing the motion strut 32 which is connected to said driving end of lever, by a pin Reciprocatory motion is imparted to said motion strut 32, and lever 14, through the medium of an eccentric 34,

turned or fastened on pulley and fly-wheeldrive shaft 35, in journals 36, on side plates 1 and 2.

The usual flywheels 37 are fastened to drive shaft 35 outside of side plates 1 and 2.

The drive shaft 35 may be driven by a tight pulley with its accompanying loose pulley (not shown), or said shaft 35 may be driven by the flywheel 37 if necessary.

The usual means may be used for lubricating all moving parts, for instance, the screwing of a compression grease cup into bosses or extensions as at 38.

Side wearing plates 38 may also be fastened on the inside of plates 1 and 2 by countersunk bolts 39.

The hopper 40 is fastened to the side plates 1 and 2 by bolts 41.

In operation, the ore is fed to the hopper 10 above and to said shoe and die plate, the ore proceeding regularly and uniformly until the point 30 between the oppositely disposed and interacting curves ofthe crushing die 12 and crushingshoe 28, is reached, where the final trituration takes place, and the finished product discharged below said shoe and die plate. By reason of the disposition of the planes of the shoe and die plate and the arrangement of the curves thereof, as shown, the rock or ore is crushed and powdered in successive steps to any desired mesh, and mechanically forced on dis charged from the machine. Hence it will be seen that the rock may be reduced to a pulverized mass, by the use of-a perceptibly small number of wearing parts, thereby accomplishing a result with a simply built and easily transported machine, designed and constructed with a view of minimum breakage, so that delays in the renewals are greatly reduced.

The crushing die 12 and crushing shoe 28,

may be made of any of the well known hard wearingmaterials, or they can be made of high carbon tool steel, and then hardened or tempered at their interacting curves.-

The wearing faces of the shoe and die may be made corrugated for apart of their effective lengths or all of their effective lengths, as may be required. When made corrugated for all of their effe :tive lengths, the said corrugations should mesh or interact with each other, as inrommon gear practice, or in other words, the convex corrugation should interact with the concave corrugation, in order that the mass should receive the maximum pulverization.

When the crushing shoe 28, by reason of wear requires adjustment relatively to the crushing die 12, a take-up plate 19 is removed on each side of machine by loosening or unscrewing the set screws and 23. Said set screws 22 and 23 are then-screwed tight in order to place the desiredtension on the adjustable and breakable thrust bar 20, and it will be'seen by this arrangement that a micrometer adjustment can be so made as required by the product to be crushed.

It will be seen that adjustment of the breakable thrust bars, and therefore of the fulcruined crushing shoe, may be made without stopping the operation of the machine; because the set screws 22 and 23 may be screwed back and forth regardless of the pressure back upon the thrust bars. Furthermore, it will be seen that by removing enough of the plates 19, the screws 22 and 23 may be screwed far enough forwardly to force the crushing shoe to such a position that it bears against the die with a certain force; or bears against the material between shoe and die with a certain force, thereby putting a certain initial strain upon the breakable thrust bar. The thrust bar being thus under an initial strain, it is put under an additional strain when the eccentric part of the crushing jaw moves downwardly into more forcible contact with the die (the shoe having been set when in its upper position). By thus setting the thrust bar under an initial strain, the additional material crushing strain necessary to break it is correspondingly reduced. By adjusting the machine in this manner I find that I can make it more delicate and sensitive in its response to a material of more than usual hardness, the thrust bars breaking if an object of more than usual hardness comes between the shoe and die.

Having described my invention, what I claim, is,

1. In a rock crusher, a plurality of spaced plates, having fulcrum ways, bearing blocks in said ways, a fulcrum shaft in said bearing blocks, a breakable thrust bar behind each bearing block, means to adjust each thrust bar to regulate the fineness of the materials acted on without stopping the crushing operation, a plurality of solid and yielding plates in front of said bearing blocks, a lever on said fulcrum shaft, and a die plate between said spaced plates, and means to operate said lever.

2. A rock crusher having side plates, a fixed die plate spacing them apart, a lever fulcrumed between said plates and having fulcrumed journals projecting through openings in said plates, breakable thrust bars for limiting the movement of each fulcrumed journal from said fixed die plate, and adjustable means behind said breakable bars, whereby the lever may be adjusted to crush materials to greater or less fineness while the crusher is operating.

3. A rock crusher having side plates, a fixed crushing die plate carried therebetween, a rocking lever trunnioned in side plates, flexible bearings for engagingsaid trunnions, adjustable breakable bars for backing up said flexible bearings, and means to adjust the ends of the breakable bars during the operation of the crusher, and means for operating the rocking lever.

4. In a rock crusher, a stationary die plate carried by side walls, a lever mounted opposite to the die plate, a fulcrum shaft for the lever, bearing blocks for the fulcrum shaft, elongated seatsin side walls for bearing blocks, and adjustable and breakable thrust bar arranged in a slotted way at one side of bearing blocks, meansforadjusting each end ofthrust bar, a resilient plate at other side of bearing blocks, and means for operating said lever.

5. A rock crusher comprising a die plate having concave and convex surfaces, a mova'ble lever member opposite thereto having an eccentric and straight crushing surface, the curve thereof being struck from a center above the plane of the fulcrum axis of the lever and terminating at or near the plane of the fulcrum axis, the divergence of the crushing faces at the top and the concave and convex surface of the die plate arranged So as to permit the materials to be fed between them by gravity when the eccentric and straight surface of lever moves upwardly and said eccentric and straight surface of lever forcing, crushing and pulverizing the materials when moving down wardly and in cooperation with the concave and convex surface of the die plate, a flexible, adjustable and breakable means for. fulcrum shaft of lever, and means to move the said movable lever member. r

6. A combined rock crusher and pulverizer comprising a die plate having a convex surface for part of its length and a concave surface at its discharge end, side walls or frames arranged to carry die plate, alever member fulcrumed opposite to said die plate having a plane surface and an I eccentric crushing surface, the eccentric curvature thereof being struck from a. center above the plane of the fulcrum axis of the lever and terminating near said plane, with the divergence of the crushing surfaces arranged for the feeding and forcing of the materials, the convex surface of die plate producing a clinging hold on materials when eccentric surface of lever member opens or moves upwardly, and the concave surface of die plate producing a pulverizing material when eccentric surface of lever member moves clownwardly, a flexible, adjustable breakable means for fulcrum shaft of lever member, and operating means for operating the lever member.

7. In a rock crusher having a stationary curved die plate carried by side walls or plates, a movable curved crushing jaw or lever fulcrumed between side walls, a fulcrum shaft carried by lever having bearing blocks, resilient adjustable supporting means at each side of bearing blocks, so that the movable curved crushing ja'w or lever will automatically adjust itself and contact the curved die plate, and means for operating the lever.

8. In a rock-crusher the combination of a frame, a movable fulcrumed crushing jaw having a lower curved face surface eccentrlc to the fulcrum, a die mounted on the frame opposite the crushing jaw in such relation thereto that the opening between the jaw and die contracts downwardly, abrea'kable thrust member behind the jaw fulcrum, and adjustable supporting means behind the breakable thrust member;

9. In a rock crusher the combination of a frame, a movable fulcrumed crushing jaw having a lower curved face surface eccentric .to the fulcrum, a die mounted on the frame opposite the crushing jaw in such relation thereto that the opening between the jaw and die contracts downwardly, the eccentric curved face of the crushing jaw being struck from a center above the fulcrum of the crushing jaw, and the lower opposite face of the die having a similar curved surface of greater eccentricity with relation to said fulcrum, abreakable thrust member behind the'jaw fulcrum, and adjustable supporting means behind the breakable thrust member;

10. A combined crusher and p'ulverize'r comprising a die plate, having a removably connected concav'e'and convex surfaced die fastenedthereon, side plates or frames-arranged to carry said die plate, movable lever a'djustablyfulcrumed in side plates having a plane'and eccentric surface opposed to the concavea'nd convex die surface, the surface of die and'the eccentric surface of movable lever to terminate near the plane of fulcrum of lever, and operating means to horizontally adjustthe movable lever and means for operating the movable lever.

11. In a combined rock crusher and p-ul verizer, the combination of a removable die. plate, a removablecrushing die, and a removable crushing jaw interposed and fastened to side plates, the crushing and pulverizing surface of the removable crushing jaw having a plane and curved surface in cooperative harmony with-the convex and concave crushing and pulverizing surface of the crushing die, breakable, adjustable and flexible means for fulcrum shaft of removable crushing jaw to allow the'curved surface of removable crushingj aw tocooperate or rub the concave surface of crushing die when the removable crushing aw is in operation,and means for operating the removable crushing jaw.

12. In a combined rock crusher and pulverizer, the combination of a-die plate, and a removable crushing die, and a removable crushing lever with a crushing shoe removably fastened thereon having a straight and irregular surface, an ogee curved crushing surface on crushing die, the removable crushing leVer having a fulcrum shaft adjustably fastened to side walls or plates and having breakable and flexible means, means on removable crushing lever to cause the straight and irregular surface to cooperate with the ogee curved crushing surface of crushing die, to contact and hold the material and gradually crush and finally pulverize, and means for operating the removable crushing lever.

13; In a rock crusher and pulverizer the combination of a removable die plate interposed between side plates, an ogee curved crushingdie removably fastened to removable die plate, a movable fulcrumed crush ing jaw interposed between side plates having a shoe fastened thereon with a straight and curved face opposed'to an ogee curved crushing die, the discharge angle of the ore or material between the crushing and pul verizing faces of shoe and die being at a relatively right angle to the plane line of fulcrum'shaft of the movable crushing j aw a fulcrum shaft in the movable fulcrumed crushing jaw having an adjustable and breakable thrust bar in thrust and tension withbearingblocks of fulcrum shaft for determiningthe'pointage or hardness of ore or materials to be passed between shoe and die faces, means for flexibly retaining shoe and diefaces apart, and means-for moving fulcrumed crushing jaw.

14. In a rock crusher and pulverizer, a plurality of spaced side plates, a removable statlonary die'p'late fastenedto the ends'of side plates, a concave and convex curved crushing die fastened todie plate. a fulcrum shaft'anda drive shaft carried by said,

plates, a lever fastened to'the fulcrum shaft having means for operating same, an irregular shaped shoe fastened to :lever, bearing blocks mounted in spaced side plates for carrying the ends of fulcrum shaft, an ad'- justable and breakable thrust bar arranged in-slotted ways for contacting and adjusting the bearing blocks of fulcrum shaft, means for applylng'a transverse stress on'breakable thrust bars when the rock crusher is in operation and the shoe and die contacting each other, meansfor connecting lever and drive shaft, and means for operating the drive shaft.

15. In arock crusher, a plurality of spaced plates, one'end of these plates being removably fastened to a stationary die plate, a curved crushing die fastened to die plate cooperating with eccentric face of shoe fastened on lever,'a fulcrum shaft carried by said plates, a lever onsaid fulcrum shaft, a shoe fastened on said lever having an eccentric face, the curve of which is formed above the center of fulcrum shaft, means'to operate said lever and means whereby a lnicroinetric adjustment may be placed on the said fulcrum shaft upon Which the lever is carried, whereby the pointage or hardness of ore may be determined.

16. In a combined rock crusher and pulverizer, a stationary die plate, side Walls carrying the same, a lever mounted opposite to said die plate, a fulcrum shaft for the lever, bearing blocks for the fulcrum shaft, breakable adjustable thrust bars be- Copies of thin patent may be obtained for hind the thrust end of the bearing blocks, means for adjusting the ends of thrust bars whereby the fineness of crushed product can be regulated and the hardness determined, and means for operating said lever.

In testimony whereof I aflix my signature in the presence of tWo Witnesses.

EDWARD HENRY MOYLE. Witnesses: N. L. PERRY, LORENE METCALF.

five cents each, by eddreuing the Commissioner of mum,

Washington, D. C." 

